Yokogawa Precision Power Analyzer WT3000T

The Yokogawa WT3000T is a high-precision power analyzer designed specifically for the testing needs of the power transformer industry. Based on the best-selling model WT3000, the WT3000T combines excellent measurement accuracy and long-term stability to perform measurements at low power factors, which is exactly what the transformer manufacturer is challenging to measure.

When developing the WT3000T, Yokogawa conducted an in-depth understanding of the transformer manufacturer. They need an instrument that can perform accurate measurements, require clear overload and safety instructions, and read critical parameters directly.

In the power generation and distribution industry, transformer manufacturers are particularly concerned about the economic impact of transformer losses. In Europe, if the transformer exceeds the prescribed no-load losses, the fine for the manufacturer will be as high as 8,000 euros/kW. Therefore, the accuracy of the measurement system becomes particularly important. The higher the accuracy of the measuring instrument, the less possible fines.

The WT3000T can not only provide excellent accuracy at low power factor and ensure the perfection of transformer measurement, but also pass the calibration of VSL (National Measurement Institute of the Netherlands) to prove that the integrated transformer measurement system complies with IEC60076-8 standard in the field of power transformers. Claim.

In the range of the standard AC frequency (45-66 Hz), the WT3000T can provide an accuracy of better than 0.6% with a power factor of only 0.01 (100V/1A). Six-bit resolution can be achieved by using a 32-bit RISC processor and a high-quality 16-bit analog/digital converter. Additional measurements of capacitors, line filter coils, or other power factor calibration circuits in the power grid also place high demands on the accuracy of the measurement instrument.

In the instrument calibration certificate issued by VSL, the test frequency is 53 Hz and the power factor is 1, 0.5, 0.05, 0.01, and 0.001, respectively. Due to its high stability and precision, the WT3000T can also be used as an etalon. The WT3000T has long-term stability and is recommended to be calibrated every two years to ensure that downtime and money are minimized.

According to the IEC and ANSI/IEEE standard formulas, the WT3000T can directly read out the corrected power value under light load conditions. The 8.4-inch large color LCD makes it easier to see the measurement.

When the power meter's voltage and/or current input is overloaded, on-screen lights will warn the operator to allow the power to be disconnected to prevent potentially costly damage.